20845908721920

Names of 20845908721920

• Cardinal: 20845908721920 can be written as Twenty trillion, eight hundred forty-five billion, nine hundred eight million, seven hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.084590872192 × 10¹³

Factors of 20845908721920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5428622073

Divisors of 20845908721920

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 640 768 960 1280 1920 3840 5428622063 10857244126 16285866189 21714488252 27143110315 32571732378 43428976504 54286220630 65143464756 81429330945 86857953008 108572441260 130286929512 162858661890 173715906016 217144882520 260573859024 325717323780 347431812032 434289765040 521147718048 651434647560 694863624064 868579530080 1042295436096 1302869295120 1389727248128 1737159060160 2084590872192 2605738590240 3474318120320 4169181744384 5211477180480 6948636240640 10422954360960 20845908721920
• Sum of all divisors σ(n): 66576620992896
• Sum of proper divisors (its aliquot sum) s(n): 45730712270976
• 20845908721920 is an abundant number, because the sum of its proper divisors (45730712270976) is greater than itself. Its abundance is 24884803549056

Bases of 20845908721920

• Binary: 100101111010110010000111111000000000100000000₂
• Hexadecimal: 0x12F590FC0100
• Base-36: 7E0H7TSLC

Squares and roots of 20845908721920

• 20845908721920 squared (20845908721920²) is 434551910442620327888486400
• 20845908721920 cubed (20845908721920³) is 9058629460022817820829688862907301888000
• The square root of 20845908721920 is 4565732.0028578111
• The cube root of 20845908721920 is 27521.5956963021

Scales and comparisons

• 20,845,908,721,920 seconds is equal to 662,835 years, 21 weeks, 4 days, 16 hours, 32 minutes.
• To count from 1 to 20,845,908,721,920 would take you about one million, six hundred fifty-seven thousand and eighty-eight years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 20845908721920 cubic inches would be around 2293.5 feet tall.

Recreational maths with 20845908721920

• 20845908721920 backwards is 02912780954802
• The number of decimal digits it has is: 14
• The sum of 20845908721920's digits is 57
• More coming soon!